Platteville is a Statutory Town in Weld County, Colorado, United States. The population was 2,370 at the 2000 census. It is adjacent to Fort Vasquez on U.S. Route 85.
Platteville is located at 40°12′52″N 104°49′27″W / 40.21444°N 104.82417°W / 40.21444; -104.82417 (40.214468, -104.824070).
The town is situated along the east bank of the South Platte River at the intersection of U.S. Route 85 and Colorado State Highway 66.